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Re: DWARF location descriptor and multi-register frame pointer
- From: Michael Eager <eager at eagerm dot com>
- To: Senthil Kumar Selvaraj <senthil_kumar dot selvaraj at atmel dot com>
- Cc: gcc at gcc dot gnu dot org
- Date: Wed, 21 Nov 2012 11:37:54 -0800
- Subject: Re: DWARF location descriptor and multi-register frame pointer
- References: <20121120102225.GB19754@atmel.com>
On 11/20/2012 02:22 AM, Senthil Kumar Selvaraj wrote:
How are frame pointer registers that span more than one hard register
handled? Would it be appropriate to check the mode and do a
multiple_reg_loc_descriptor call or something similar to handle this
case?
There is no requirement that the DWARF registers map one-to-one to
hardware registers. You could define a DWARF register which represents
the FP register, spanning two hardware registers.
--
Michael Eager eager@eagercon.com
1960 Park Blvd., Palo Alto, CA 94306 650-325-8077